Which component is responsible for converting AC to DC power?

The component responsible for converting alternating current (AC) to direct current (DC) power is known as a Transformer Rectifier Unit, commonly abbreviated as TRU. The TRU performs this vital function by first stepping down the voltage and then rectifying the AC input into a usable DC output, which is essential for many of the electrical systems aboard the aircraft that require DC power for operation.

This conversion is crucial because many onboard systems, such as avionics and various control circuits, operate on DC power. Additionally, the TRU typically receives its power from the aircraft's AC generators and plays a significant role in the overall electrical distribution system. Its functionality ensures reliability and stability in providing the necessary DC power to critical systems during flight operations.